Wire vibration damper



April 18, 1939. w. s. DIEHL 2,154,442

WIRE VIBRATION DAMPER Filed Feb. 7. 1938 ETOR WALT S. DIEHL ATTORNEY Patented Apr. 18, 1939 UNITED STATES 3,154,443 WIRE VIBRATION DAM Walter S. Diehl.

United States Navy Application February I. 1938, Serial No. 189,122

Claims.

(Granted under the act of March 3.

amended April 80,

This invention relates to a wire vibration damper, and has for an object to provide means for damping vibration along wires. particularly on long streamline wires on aircraft, not only for the purpose of possibly reducing the air resistance but also mainly for the purpose of lessening fatigue and crystallization, and hence increasing the safety factor and the life of the wire.

A still further object of this invention is to provide a vibration damper which may be applied toanywireinanylocationforthlspurpose.

With the foregoing and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter described and illustrated in the drawing, in which:

Fig. 1 is a sectional view of as applied to a streamline wire, of Fig. 2; and

Fig.2isa sectionalviewonline 2-2 of. i.

There is shown at it a streamline wire of the im generally used on aircraft and generally subject to vibration while the aircrait is in flight. A collar Ii, internally and externally shaped to conform to the contour of the wire I0, is placed over the streamline wire II and held in position thereon as by a set screw II, the collar ll being formed of fibre or phenolic condensation product such as Bakelite. This collar, Ii is provided with a pair of flanges "and ii, between which is floatably located a lead weight II, the internal and external conflgurati n oi the lead weight ilbeingsimilartothatoi thecollar ii and wire ill, the size of the lead weight being such that its internal dimensions are substantially greater than the external dimensions 0! the collar ll, while its external dimensions are somewhat less than that 0! the external dimensions of the flanges l8 and ii.

In operation, it will be observed that due to the dimensions above described. the major part of the lead weight It is spaced somewhat irom the collar il. When the aircraft is in flight any vibration of the wire II will be immediately damped by the inertia of the lead weight is thereon. The lead weight I will naturally not have the same period of vibration as the wire II, and the spacing between the collar II and the lead weight ll greatly increases the diiierence in vibration-period and thereby even more greatly increases the damping eilect oi ,the lead weight II. If desired, several of these vibration dampers may be placed on a single wire, the entire assembly being small. light, and of low air resistance, the internal opening being so shaped thatitmaybeeasilyslippedovertheendoithe the vibration damper being on line i-| 1888, as 1928: 0. G. 151).

Other modifleations and changes in the proportionsandarrangementsofthepartsm-aybe made by those skilled in the art without departing from the nature of the invention, within the scope of what is hereinafter claimed.

The invention described herein may be mant factured and used by or for the Government i the United States of America for governmen purposes without the payment of any royal therein or. therefor.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

i. A wire vibration damper comprising a collar adapted to be secured to the wire whose vibration istobedampedandaweightencirclingsaid collar, said weight being restrained from axial movement but being unrestrained within the limits of its motion in a plane at right angles to the axis of the wire.

2. A wire vibration damper comprising a collar adapted to be secured to the wire whose vibration is to be damped, said collar being shaped to conform to the contour of the wire, a pair of spaced flanges extending from said collar, and a weight of greater dimensions than said collar and or lesser dimensions than said flanges, whereby said weight is restrained from axial movement along the wire but is unrestrained from movement up to the limit provided in any direction in the plane at right angles to the axis of the wire.

3. A wire vibration damper comprising a lead weight and means tor floatably-mounting said weightonthewirewhosevibrationistobe damped.saidmssnscomprising acollar and a pair of flanges on said collar between which said weight M mounted. whereby said weight is restrained from axial movement along the wire but is unrestrained irom movement up to the limit provided in any direction in the plane at right angles to the axis of the wire.

4. Means for damping the vibration of a streamlined wire comprising a collar adapted to be secured to the wirewhose vibration is to be damped, said collar being streamlined to coniormtothecontouroithewire, apair ofspaced flanges extending from said collar, a weight of greater density than the wire and streamlined to ccniorm to the contour of the wire, said weight being of greater dimensions than said collar and of lesser dimensions than said flanges, said weight encircling said collar, said weight being restrained from axial movement along the wire and irom rotary movement around the wire, but being unrestrainedwithin the limits of its motioninaplaneatrightanglestotheaxisoi the wire.

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